Speaker
Description
In this presentation, we will show experimental plans to study nucleon resonances ($N^*$ and $\Delta^*$) using $\pi N \rightarrow \pi \pi N$ reactions (E45) and search for new $\Lambda(1665)$ resonance in $K^{-} p \rightarrow \Lambda \eta$ reaction (E72) at J-PARC Hadron Experimental Facility. These experiments will be performed using a large acceptance spectrometer based on a Time Projection Chamber (HypTPC). The high-intensity $\pi^{\pm}$ and $K^{-}$ beams will be injected on the liquid hydrogen target which is embedded in the high-rate capable TPC. The TPC is placed inside a superconducting Helmholtz magnet. For E45, we will measure these reactions in small momentum steps in the center-of-mass energy range of 1.5-2.1 GeV. Then, we perform partial wave analysis to extract properties of resonances. For E72, we will search for $\Lambda(1665)$ resonane around $\sqrt{s}=1665$ MeV and determine its spin parity using angular dependence of the produced particles. In this presentation, we will show the experimental design, expected results in simulations, and the status of the detector development.
